:root {
  --bg: #eaf6ff;
  --panel: #ffffff;
  --text: #1e2a33;
  --line: #c8d7e0;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}

.wrap {
  max-width: 1020px;
  margin: 20px auto;
  padding: 0 12px;
}

h1 {
  margin: 0 0 8px;
  font-size: 1.35rem;
}

.hud {
  margin: 0 0 10px;
  padding: 10px;
  border: 1px solid var(--line);
  background: var(--panel);
  display: flex;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 0.95rem;
}

canvas {
  width: 100%;
  max-width: 960px;
  border: 1px solid #90a8b6;
  background: #a8dbff;
  display: block;
}